<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Document</title>
  </head>
  <script src="js/watcher.js"></script>
  <script src="js/vue.js"></script>
  <body>
    <div id="app">
      <h1>{{ message }}</h1>
      <p>{{ count }}</p>
      <span>{{ message }}</span>
    </div>
    <script>
      var vm = new Vue({
        el: '#app',
        data: {
          message: 'hello',
          count: 0
        }
      })
    </script>
  </body>
</html>
